Add contribution guides

Author: hermanzdosilovic

source/contribute.rst

@@ -1,4 +1,28 @@
 Contribute
 ==========
 
-Add your content using ``reStructuredText`` syntax. See the `reStructuredText <https://www.sphinx-doc.org/en/master/usage/restructuredtext/index.html>`_ documentation for details.
+1. Install `uv <https://docs.astral.sh/uv/getting-started/installation>`_.
+2. Fork the repository on `GitHub <https://github.com/judge0/docs/fork>`_.
+3. Clone your forked repository.
+4. Navigate to the ``docs`` directory and install the dependencies.
+
+   .. code-block:: bash
+
+      cd docs
+      uv sync
+
+5. Add your content using ``reStructuredText`` syntax. See the `reStructuredText <https://www.sphinx-doc.org/en/master/usage/restructuredtext/index.html>`_ documentation for details or any of the following resources:
+
+   - `A ReStructuredText Primer <https://docutils.sourceforge.io/docs/user/rst/quickstart.html>`_
+   - `Quick reStructuredText <https://docutils.sourceforge.io/docs/user/rst/quickref.html>`_
+   - `The reStructuredText_ Cheat Sheet: Syntax Reminders <https://docutils.sourceforge.io/docs/user/rst/cheatsheet.rst>`_
+
+6. Build your changes locally.
+
+   .. code-block:: bash
+
+      rm -rf build; uv run make html
+
+7. Open the generated HTML files (``./build/html/index.html``) in your browser to review your changes.
+8.  Commit and push your changes to your forked repository.
+9. Create a pull request to the main repository.